How to disable gatekeeper in terminal
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Initially, Gatekeeper only required that your application was signed with an Apple Developer ID certificate. On Macs, the code signature also typically covers any resources such icons and images bundled together with your app, either in your app bundle or in your installer package (.pkg).
#How to disable gatekeeper in terminal mac os x
In the context of Mac computers, macOS (back then called Mac OS X), has long supported code signatures, but it wasn't until 2012 (with Mac OS X 10.7.5) that the operating system starting enforcing it through the Gatekeeper feature. For example, an app could be tampered with if a web server is compromised. Simplified, a code signature is a cryptographic proof of two things: that the software you have downloaded comes from the author you expect it to (demonstrating authenticity) and that it has not been tampered with on its way from the author's computer to your computer (demonstrating integrity). One important piece of the security puzzle in a modern operating system is a code signature. The security expectations of a modern consumer operating system have advanced along with the evolution of the software industry. MacOS, the operating system that powers Apple's Mac computers, is a general-purpose operating system in the sense that Apple does not control what software the user runs.
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This post details how I found the bug and the simple proof of concept I made to exploit it.
#How to disable gatekeeper in terminal update
The vulnerability was fixed in macOS Big Sur 11.3 and Security Update 2021-002 Catalina. The effect of this was that it was possible to execute unsigned binaries on macOS despite Gatekeeper enforcement of code signatures, which would be of particular interest to targeted attackers who would want to execute a custom implant on such systems. When extracted by Archive Utility, file paths longer than 886 characters would fail to inherit the extended attribute, making it possible to bypass Gatekeeper for those files.